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1. WO2020117149 - CONCEALED HINGE

Note: Text based on automatic Optical Character Recognition processes. Please use the PDF version for legal matters

[ EN ]
CONCEALED HINGE

Technical Field

The invention relates to a concealed hinge which is designed to be used in industrial type cold storage depots and is protected from external interference by being positioned between the door and its casing.

The invention particularly relates to a concealed hinge placed in the cavity between the door and its casing, which allows the door to attach into the frame independent of the thickness of the door of the cold storage depot, due to the channels formed in rigid and mobile elements of the door frame.

Prior Art

Storing food in cold environments is the most efficient method for centuries. In the ancient ages, the snow was used to prevent or delay food spoilage, then following the 1800s, the cold air instruments were developed, and a great era has been opened on the preservation of food. The cold storage is a warehouse that is preferred to extend the life of the foods to be preserved and to minimize process temperatures in food manufacturing, which consists of the panels with polyurethane foam filling between the walls around it and in its roof. This type of cooling systems can be ammonia or Freon refrigeration. These cooling devices consist of evaporators within the room and condenser units outside the room. Fruits and vegetables that are still raw, or rapidly deteriorating agricultural products, or dairy products such as milk, should be kept in a cold environment during the period from production to consumption.

One of the most significant factors affecting the internal temperature of cold storage is the insulation of the door. Since the door is a movable structure, it is of great importance that the heat insulation is fully and adequately assembled in the part where it sits within its frame. The hinges used in the opening and closing mechanisms of the doors with heavy structures need to be designed in larger dimensions to carry the load it is exposed to. The hinges that are being used today are subject to high friction due to the load they carry, and a sag may occur depending on the weight of the door over time. The fact that the hinges are mounted outside the cold storage depots allows direct access to the storages from outside dodging the locks. Mounting hinges in such a way that they are easily accessible from the outside causes a significant security

vulnerability in the protection of the products stored in cold storage against theft. Without unlocking, the door can be opened with only dismantling the hinges, and the products in the storage can be taken without permission. On the other hand, mounting hinges outside the door causes the door to close on top without being embedded in the case. Due to the mounting shape of the hinge on the outer surface of the storage, the door has an elevation or a protrusion which causes the usage area to narrow. The structure and working principles of the existing hinges and upgrade mechanisms shorten the material life and cause the depot cover to fail in a short time.

Various studies have been carried out to improve door hinges used in industrial areas such as cold storage depots and to solve existing problems. One of these studies based on the utility model titled "Development in Double-acting Door" with application no. TR201404780. This invention relates to the development of the double-acting door. The invention is used in factories, warehouses, manufacturing facilities, cold storages, food production and processing facilities, dining halls and other places where forklifts, pallet trucks, hand trolleys, and service vehicles are heavily used. The double-acting door of the invention provides the hygienic isolation of the space in which it is used against the external environmental conditions and prevents the heat loss due to the fact that it is closed by itself during the non-use times and provides hygienic use by opening and closing without contacting with hand. In addition, due to the specially designed hinges, the blades can be fixed with a 90-degree opening. With the development made in the double-acting door of the invention, it is possible to use the plexiglass material as well as the polycarbonate, polyethylene, soft PVC and similar materials which are suitable for the purpose and area of the use, thus it can be used in various areas and it is possible to have a long-term use.

As a result, the need for a concealed hinge that resolves the disadvantages in the present technique and the absence of an existing solution necessitated an improvement in the relevant technical field.

Brief Description of the Invention

The invention relates to a concealed hinge that resolves the disadvantages in the present technique and offers additional advantages, and that is designed to be used in industrial type cold storage depots and is protected from external interference by being positioned between the door and its casing.

Based on the prior art, the purpose of the invention is to ensure that the fixed and movable parts of the casing are interlinked by the channel design of the concealed hinge developed.

The purpose of the invention is to ensure that the door is located outside the outer frame of the door for insulation purposes only via the channels contained in the concealed hinge, regardless of the thickness of the door of the cold storage, and in this way, both the insulation and the area in front of the door are used to the maximum level.

Another purpose of the invention is to reduce the counter-forces, frictions, and stresses on the movable frame pieces during rotational motion by means of the shaft slot with the optimum radius, which provides the elevation mechanics of the concealed hinge, and to reduce the stresses on both the shaft and the moving frame piece.

Another purpose of the invention is to prevent the concealed hinge from opening in any way from outside as it is located in the space between the door and the door frame.

Another purpose of the invention is to ensure that the concealed hinges can rotate 180 degrees through the channels and that the height of the hinges can be kept constant during this movement.

The structural and characteristic features and all advantages of the invention outlined in the drawings below and in the detailed description made by referring these figures will be understood clearly, therefore the evaluation should be made by taking these figures and detailed explanation into consideration.

Brief Description of Figures

In order to be able to understand the advantages of the present invention together with the additional elements, it is necessary to evaluate it with the figures explained below.

Figure-1 is a schematic view of the closed version of the concealed hinge,

Figure-2 is a schematic view of the demounted version of the concealed hinge.

Reference Numbers

100. Concealed Hinge

1 10. Fixed piece

1 1 1. Channel

1 12. Radius slot

120. Movable piece

121. Screw channel

122. Shaft channel

123. Radius surface

130. Shaft

131. Shaft slot

Detailed Description of the Invention

In this detailed description, concealed hinge (100) of the invention, which is designed to be used in industrial type cold storage depots and is protected from external interference by being positioned between the door and its casing, is described only as an example for better understanding of the subject without creating any limiting effect.

The concealed hinge (100) shown in Figure 1 consists of fixed piece (1 10) mounted on the door frame of the cold storage depot, movable piece (120) mounted on the door of the cold storage depot, and shaft (130) connected to the fixed piece (1 10) through this movable piece (120). The said movable piece (120) rotates on the shaft (130) to open and close the door. The said fixed piece (1 10) and the movable piece (120) are interconnected. The channel (1 11 ), which allows the door to be embedded in and shifted to a certain extent on the horizontal axis, is positioned on the fixed piece (1 10), and the screw channel (121 ), which allows it to move on the vertical axis, is positioned on the movable piece (120). By means of the movement on said horizontal and vertical axes, it is ensured that the movable door wing is fully engaged in the fixed frame. Through the said channel (1 1 1 ) and screw channel (121 ), it is ensured that the door is located outside the outer frame of the door for insulation purposes only, regardless of the thickness of the door of the cold storage depot.

The shaft (130) passing through the shaft channel (122) of the movable piece (120) shown in Figure 2 is connected to the fixed piece (110) corresponding to each other is designed in a way that one of the sides is a radius slot (1 12) with an intrusion and protrusion while other of the two shaft slots (131 ) having a flat section. The shaft (130) passing through the middle part of the said movable piece (120) sits in the shaft slots (131 ) located on the fixed piece (1 10). The correspondence of the said shaft slot (131 ) at the bottom of the fixed piece (1 10) is created in the form of the radius slot (1 12). There is also a radius surface (123) with intrusions and projections on the contact surface of the said movable piece (120). Due to the said radius slot (1 12) and the radius surface (123), the stresses that occur during the movement of the door have been reduced to a minimum.

The most fundamental feature of the said concealed hinge (100) is its positioning in the space between the door and the door frame of the cold storage depot. In this way, the door can be completely embedded in the frame. The embodiment of the concealed hinge (100) into the door and door frame prevents any unauthorized intervention from the outside and ensures the safety of the products inside the storage depot. Through the channel (1 11 ) and the screw channel (121 ) comprised by the said concealed hinge (100), it is ensured that the door can rotate 180 degrees. During the said rotational motion, the height of the door which reaches the maximum height due to the radius slot (1 12) and the radius surface (123) is maintained and is prevented from falling down during that rotational motion. In case of using profiles designed in line with the channel (1 1 1 ) and screw channel (121 ) in the mentioned concealed hinge (100), the concealed hinge (100) can be prevented from being seen inside the door as well as outside the door.